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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/11/234" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter, from Joseph Johann Littrow to Sir John Herschel, dated at Vienna</dc:title>
  <dc:description>Autograph letter signed by sender. Has he received the copies of the Vienna Observations? Encloses a small pamphlet of interest to mariners. What does he think of Josef Fraunhofer's micrometer for observing double stars? Is writing this letter on his birthday.</dc:description>
  <dc:date>13 March 1822</dc:date>
</rdf:Description>